package com.lagou.edu.servlet;

import com.lagou.edu.factory.AnnotationBeanFactory;
import com.lagou.edu.factory.BeanFactory;
import com.lagou.edu.factory.ProxyFactory;
import com.lagou.edu.service.impl.TransferServiceImpl;
import com.lagou.edu.utils.JsonUtils;
import com.lagou.edu.pojo.Result;
import com.lagou.edu.service.TransferService;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * @author 应癫
 */
@WebServlet(name = "transferServlet", urlPatterns = "/transferServlet")
public class TransferServlet extends HttpServlet {
    @Override
    public void init() throws ServletException
    {
        super.init();
        try
        {
            AnnotationBeanFactory.init();
        }
        catch (Exception e)
        {}
    }
    
    /**
     * @author ws 2020年5月12日 上午1:41:51
     * @version 1.0
     */
    private static final long serialVersionUID = -9038070033640230615L;
    // 1. 实例化service层对象
    // private TransferService transferService = new TransferServiceImpl();
    // private TransferService transferService = (TransferService) BeanFactory.getBean("transferService");
    
    // 从工厂获取委托对象（委托对象是增强了事务控制的功能）
    
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
    {
        doPost(req, resp);
    }
    
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
    {
        
        // 设置请求体的字符编码
        req.setCharacterEncoding("UTF-8");
        
        String fromCardNo = req.getParameter("fromCardNo");
        String toCardNo = req.getParameter("toCardNo");
        String moneyStr = req.getParameter("money");
        int money = Integer.parseInt(moneyStr);
        
        Result result = new Result();
        
        try
        {
            // 首先从BeanFactory获取到proxyFactory代理工厂的实例化对象
            TransferService transferService = AnnotationBeanFactory.getBean(TransferService.class);
            // 2. 调用service层方法
            transferService.transfer(fromCardNo, toCardNo, money);
            result.setStatus("200");
        }
        catch (Exception e)
        {
            e.printStackTrace();
            result.setStatus("201");
            result.setMessage(e.toString());
        }
        
        // 响应
        resp.setContentType("application/json;charset=utf-8");
        resp.getWriter().print(JsonUtils.object2Json(result));
    }
}
